Burakin Mt Marshall Lake Hillman Goomalling ppm uranium grid geodetic

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth�s surface as the result of the natural radioactive decay of potassium, uranium and thorium. The data are collected on airborne geophysical surveys conducted by Commonwealth, State & NT Governments and the private sector.

放射测量法（radiometric method），亦称伽马射线能谱法（gamma-ray spectrometric method），可通过检测地球表面附近的伽马射线，量化钾、铀和钍自然放射性衰变所产生的伽马射线自然变化。本数据集的数据采集自联邦、各州及北领地（NT）政府以及私营部门开展的航空地球物理调查。